/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package redpoll.text;

import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;

import org.apache.hadoop.io.Writable;

import redpoll.core.Vector;

/**
 * Vector Element. 
 * @author Jeremy Chow(coderplay@gmail.com)
 */
public class ElementWritable implements Vector.Element, Writable{

  private int index;
  private double value;

  public ElementWritable() {
  }
  
  public ElementWritable(int index) {
   this.index = index;
  }
  
  public ElementWritable(int index,  double value) {
    this.index = index;
    this.value = value;
  }

  public void readFields(DataInput in) throws IOException {
    index = in.readInt();
    value = in.readDouble();
  }

  public void write(DataOutput out) throws IOException {
    out.writeInt(index);
    out.writeDouble(value);
  }
  
  public String toString() {
    return index + ":" + value;
  }

  public double getValue() {
    return value;
  }

  public int getIndex() {
    return index;
  }

  public void setValue(double value) {
    this.value = value;
  }
  

}
